Leer for annealing plate-glass.



No. 700,427. Patented May 20, 1902.

w. n. KEYES. v LEER FOB ANN EALING PLATE GLASS.

' (Application filed Sept. 4, 1901.)

(No Mqdel.) v 2 Sheets-Sheet l.

WITNESSES. INVENTURP Rm: nzrzns ca. PHOTO-L|THO., WASHINGTON, I16.

Patented May 20, I902.

' w. n. KEYES. LEER FOR ANNEALING PLATE GLASS.

(Application filed SW. 4, 1901.)

2 Sheets-Sheet 2 (N0 Mudei.)

7 1, Q I 0. 1 O F Q Q g mm m MW ii I r. M m w 4 WM WITNESSES- NVENTEIRw. 2 magma I UNlTE-D, STATES 1 PATENT QQFF E.

WASHINGTON n, REYES, or 'iirihrnsvlLtn, PENNSYLVAN.IA;,-

LEERC' FOB 'AYNNEALLING" PLATE-G LASS'.

' srfincrrionrxon forming part er Letters Patent No. 700,427, dated May2o, 19o2.

Application filed $eptember 4,1991. $eria1 No. 74.285. (No model.) Q

To all whom it may concern: v

' Be it known that WASHIN TON D. KEYEs,

in accordance with .my invention.

a citizen of the United-States, residing at Blairsville,in the countyof-Indiana and State of Pennsylvania, have invented certainnew andusefullmprovementsin-LeersforAnnealing Plate-Glass, of which thefollowing is a specification, reference being had therein to theaccompanyingdrawings. r I This invention relates to lcers for annealingplate-glass, and has particular reference to certain improvements initheconstruction of a circular'or other continuous leer through which theplates are 'carriedon cars from the casting-table to the cutting-table.

The invention consists in the novel features of construction and in thecombination and arrangement of parts hereinafter fully described andclaimed, and illustrated by the accompanying drawings, wherein- FigureUs a plan view of a leer constructed Fig. 2 is a cross-sectional view online 2 2 otFig. 1, and

Fig. 3 is a cross-section taken on line 3 3 of the same figure. Fig. eisan elevation of the inlet portionof the leer, and Fig-5 is a sec: tionalplanview of the same. Fig". 6 is a vertical longitudinal sectional viewof theo'utlet portion. Fig. 7 isa sectionalview on line 7 7 of Fig. 1.

Referring to the drawings, 2 representsa continuous tunnel, preferablycircular in form and provided with tracks 3 on thefloor thereof, uponwhich move the circular or endless series of cars 4, coupled together at5. The tunnel is closed its entire length, save for interruption 6 ofsegmental form to correspond to the segmental-shaped cars, which passtherethrough progressively, carrying the annealed plates, which aredischarged onto cutting-table 7. The opposite ends or terminals of thetunnel at incision 6 are closed, save when the cars are moving, byvertically-moving doors 8, which are so spaced apart and arranged as todrop between the ears, the discharging-car being thus separated while atrest from. the ad: jacent cars to which it is coupled, as shown in Fig.6. Secured to the under sides of the cars are the rack-sections 9, whichform a substantially continuous rack,and engaging the same are pinions10' on drive-shafts 10, ex-

to the circle of cars.

movementpasses a car to discharging posi-' tion; 1

Immediately beneath the floor of tunnel 2 is a flue 14.1 At the innerend of this flue, which is as near as practicable. to dischargeopeningt, is grate 15, upon which coke may be burned, or a gas-burner;1na'y be provided where gas-is available. Flue 14 extendsun-vjacentjdischarge 6, where it'communicates with stack 16, WVith thisgrate and flue the portion of the tunnel between the discharge 6 and thecasting-table or that'part which remay be substituted for grate 17, ifdesired. With this source of heat the upper portions reheated, ready toreceive the freshly-cast plates, and also a further means is providedfor maintaining a gradually-reduced temperature in the tunnel as thedischarge-opening is five iann ealing'temperature, the same beinghighest-for reheating the empty cars while passing to charging positionand of such gradually-reducing degree as the discharge is approachedthat the plates emerge perfectly annealed and ready for removal-to thecutting lei The'doors 8, which are notched, asshown,

and top surfaces of the cars are thoroughly tending from three or moremotors 11-,ar-

ranged exterior of the leer, and by this means uniform intermittentmovement is imparted] This movement occurs after-a freshly-cast plateismoved to position I oua carthroughinlet opening 12 from caste 7 ingtable13, and'withdoors 8 raised the same.

interruptedly around thetunnel to a point ad-- ceives the carsimmediatelyafter the glass is tween tunnel 2 and stack 16. Agas-burnerapproached. With proper manipulation the two grates combine to provide amost effect to move down over car-couplings 5 and rack I 9, effectuallyclose the tunnel-openings at the point of discharge and preventadmission and circulation of cold air. The tunnel is thus substantiallytight and the plates fully protected against injurious drafts. As theplates are not disturbed or manipulated in any manner during theannealing process, there is practically no waste.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-- 1. An improved leer comprisinga tunnel having inlet and discharge openings, platecarrying means Withinthe tunnel, a flue beneath the tunnel-floor, a stack communicatingwiththe tunnel and flue, and means for supplying heat to the tunnel andline, substantially as shown and described.

2. An improved leer comprising a tunnel having inlet and dischargeopenings, platecarrying means Within the tunnel, a fine beneath thetunnel-floor, means adjacent the tunnel-inlet opening for supplying heatto the tunnel and flue, and a stack adjacent the tunnel-outlet openinghaving separate connections with the flue and tunnel, substaniially asshown and described.

3. An improved leer comprising a circular tunnel having a transverseopening or inter ruption forming a discharging-space, the tunnel beingprovided with an inlet-opening and with heating means, an endlessplate-conveyer within the tuunel and traversing the saiddischarging-space, mechanism for actuating the conveyer, and means forclosing the tunnel at opposite ends of the discharging-space with aportion of the conveyer in said space, substantially as shown and deingthe tunnel at opposite ends of the discharging-space, substantially asshown and described.

5. An improved leer comprising a circular tunnel having a transverseopening or interruption forming a discharging-space, the tunnel beingprovided with an inlet-opening and with heating means, an endless seriesof plate-carriers movable in the tunnel, means for actuating thecarriers, and means for closing the tunnel at opposite ends of the discharging-space with the dischargingcarrier intermediate theclosingmeans, substantially as shown and described.

6. An improved leer comprising a circular tunnel having aninlet-opening, an endless series of segm ental-shaped plate-carriersmovable in the tunnel, means for actuating the carriers, means forheating the tunnel, the tunnel being formed with a vertical openingorinterruption corresponding in outline to any one of the carriers, anddoors movable between the carriers for closing the tunnel at oppositeends of the said discharging-opem ing, substantially as shown anddescribed.

7. An improved leer comprising a circular tunnel formed with aninlet-opening, an endless series of segmental-shaped carriers movable inthe tunnel, means for actuating the carriers, the tunnel being formedwith a transverse segmental-shaped opening or interruption correspondingin size to any one of the carriers, doors at opposite ends of saidopening for closing the tunnel with a carrier positioned Within saidspace for discharging, a horizontal flue beneath the tunnel-floor havingits inlet end between the tunnel inlet and outlet openings, a stackadjacent the tunneloutlet With which the tunnel and flue communicate,and means for supplying heat to the flue and tunnel, substantially asshown and described.

In testimony whereof I aflix my signature in presence of-two witnesses.

YVASHINGTON D. KEYES.

Witnesses:

J. M. NESBIT, ALEX. S. MABoN.

